Abstract
Electromillifluidic is introduced as a novel encapsulation technique to fabricate small core-shell millicapsules filled with cinnamon oil with high productivity. The effect of the flow rate ratios of dispersed and continuous phases and applied voltage on encapsulation efficiency, loading capacity, size, and sphericity of millicapsules were analyzed. Reynolds number confirmed a Laminar flow in the glass tube (0.028). The small Capillary value (0.095), electric Capillary numbers (0.024–0.054) of the continuous phase, and also Weber number of the dispersed phase (4.7 × 10−4–15.3 × 10−4) showed a dripping flow regime. Enhancing the voltage reduced the size and sphericity; however, the Young Modulus was improved. The maximum release of oil (97.19%) from chitosan-coated millicapsules in the gastrointestinal tract and its lowest leakage (73.43%) were observed at 18 and 0 kV, respectively. The results confirm the potential of this technique for the encapsulation of bioactive compounds in the food and pharmaceutical industry.
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